Xing Zhang1, Ling-Yi Shen2, Qi-Long Zhang1,2, Xian-Jiong Yang2, Ya-Li Huang2, Carl Redshaw3, Hong Xu1,2. 1. The key Laboratory of Environmental Pollution Monitoring and Disease Control, School of Public Health, Ministry of Education, Guizhou Medical University, Guiyang 550004, China. 2. School of Basic Medical Science, Guizhou Medical University, Guiyang 550004, China. 3. Department of Chemistry, University of Hull, Cottingham Road, Hull, Yorkshire HU6 7RX, UK.
Abstract
An aniline-functionalized naphthalene dialdehyde Schiff base fluorescent probe L with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a simple one-step condensation reaction and exhibited excellent sensitivity and selectivity towards copper(II) ions in aqueous media with a fluorescence " turn-off " phenomenon. The detection limit of the probe is 1.64 × 10-8 mol·L-1. Furthermore, according to the results of the UV-vis/fluorescence titrations, Job's plot method and 1H-NMR titrations, a 1:2 stoichiometry was identified. The binding constant between L and Cu2+ was calculated to be Ka = 1.222 × 103. In addition, the AIEE fluorescent probe L could be applied to detection in real water samples with satisfactory recoveries in the range 99.10-102.90% in lake water and 98.49-102.37% in tap water.
An aniline-functionn class="Chemical">alized naphthalene dialdehydeSchiff base fluorescent probe L with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a simple one-step condensation reaction and exhibited excellent sensitivity and selectivity towards copper(II) ions in aqueous media with a fluorescence " turn-off " phenomenon. The detection limit of the probe is 1.64 × 10-8 mol·L-1. Furthermore, according to the results of the UV-vis/fluorescence titrations, Job's plot method and 1H-NMR titrations, a 1:2 stoichiometry was identified. The binding constant between L and Cu2+ was calculated to be Ka = 1.222 × 103. In addition, the AIEE fluorescent probe L could be applied to detection in realwater samples with satisfactory recoveries in the range 99.10-102.90% in lake water and 98.49-102.37% in tap water.
Entities:
Keywords:
AIEE; copper(II) ion; fluorescent probe; synthesis; water detection
Authors: Costas Hadjipanagiotou; Anastasis Christou; Andreas M Zissimos; Elias Chatzitheodoridis; Soterios P Varnavas Journal: Environ Sci Pollut Res Int Date: 2020-07-17 Impact factor: 4.223